//
//  IdfaTool.m
//  OCBase
//
//  Created by 侯伟 on 2017/11/13.
//  Copyright © 2017年 侯伟. All rights reserved.
//

#import "IdfaTool.h"
#import <UIKit/UIKit.h>
#import <AdSupport/ASIdentifierManager.h>
#import <AppTrackingTransparency/AppTrackingTransparency.h>
#import "HApp.h"

@implementation IdfaTool

+ (void)requestIDFA {
    if (@available(iOS 14, *)) {
        [ATTrackingManager requestTrackingAuthorizationWithCompletionHandler:^(ATTrackingManagerAuthorizationStatus status) {
            
        }];
    }
}

+ (NSString *)getIDFA{
    NSString * IDFA = [[[ASIdentifierManager sharedManager] advertisingIdentifier] UUIDString];
    return IDFA;
}



//储存

+ (void)save:(NSString *)service data:(id)data{
    
    //Get search dictionary
    NSMutableDictionary *keychainQuery = [self getKeychainQuery:service];
    
    //Delete old item before add new item
    
    SecItemDelete((__bridge CFDictionaryRef)keychainQuery);
    
    //Add new object to search dictionary(Attention:the data format)
    
    [keychainQuery setObject:[NSKeyedArchiver archivedDataWithRootObject:data] forKey:(__bridge id)kSecValueData];
    
    //Add item to keychain with the search dictionary
    
    SecItemAdd((__bridge CFDictionaryRef)keychainQuery, NULL);
    
}

+ (NSMutableDictionary *)getKeychainQuery:(NSString *)service
{
    return [NSMutableDictionary dictionaryWithObjectsAndKeys:
            
            (__bridge id)kSecClassGenericPassword,(__bridge id)kSecClass,
            
            service, (__bridge id)kSecAttrService,
            
            service, (__bridge id)kSecAttrAccount,
            
            (__bridge id)kSecAttrAccessibleAfterFirstUnlock,(__bridge id)kSecAttrAccessible,
            
            nil];
}



//取出

+ (id)load:(NSString *)service {
    
    id ret = nil;
    
    NSMutableDictionary *keychainQuery = [self getKeychainQuery:service];
    
    //Configure the search setting
    
    //Since in our simple case we are expecting only a single attribute to be returned (the password) we can set the attribute kSecReturnData to kCFBooleanTrue
    
    [keychainQuery setObject:(__bridge id)kCFBooleanTrue forKey:(__bridge id)kSecReturnData];
    
    [keychainQuery setObject:(__bridge id)kSecMatchLimitOne forKey:(__bridge id)kSecMatchLimit];
    
    CFDataRef keyData = NULL;
    
    if (SecItemCopyMatching((__bridge CFDictionaryRef)keychainQuery, (CFTypeRef *)&keyData) == noErr) {
        
        @try {
            
            ret = [NSKeyedUnarchiver unarchiveObjectWithData:(__bridge NSData *)keyData];
            
        } @catch (NSException *e) {
            
            NSLog(@"Unarchive of %@ failed: %@", service, e);
            
        } @finally {
            
        }
        
    }
    
    if (keyData)
        
        CFRelease(keyData);
    
    return ret;
    
}

//删除

+ (void)deleteService:(NSString *)service {
    
    NSMutableDictionary *keychainQuery = [self getKeychainQuery:service];
    
    SecItemDelete((__bridge CFDictionaryRef)keychainQuery);
    
}

@end
